. >> and one of the reasons, it can be fixed with good science. >> john: good science. you have book out "good calories bad calories." i know that calorie is a calorie. what are you talking about? >> the idea of the calorie is a calorie. the reason get fat is because you take in more energy than you expend. it comes in the form of calories. it's a unit of heat. each one of nutrients you eat. protein and fat and different types of carbohydrates. glucose from sugar from starchthey have different effects on your body. some stimulate secretion of hormones that have different effects on whether or not you will store calories as fat or fuel. maybe it's not the calories. it's the hormonal affect of the foods on our body. what these foods do to us. >> john: the u.s. department of health is saying a calorie is a calorie is a calorie. is it stupid? [ laughter ] >> just hasn't been tested. one of the things we did when we started this organization. we went back. >> john: this being? >> the nutrition science initiative. >> we went back to every study back to world war ii that had a